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It's important to investigate the cause of deficiency with tests such as anti-intrinsic factor antibodies and to check folate status
[85] Zhang Y, Fang J, Dong Y, et al
28 However, oral therapy does not improve serum methylmalonic acid levels as well as intramuscular therapy, although the clinical relevance is unclear
Women under 140 pounds typically respond well to 0.5mg daily, while those over 160 pounds may benefit from the full 1mg dose
Most evidence is still early-stage or preclinical
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